Creating A Thatched/Rattan Material?
One way to get this would be:


Add a plane, in Edit Mode subdivide W
Poke Alt-P


This should look like:




In top view Numpad-7 rotate 45° R 4 5
Scale along X-Axis S X  
Select one of the new (poked) vertices and select Amount of connecting edges from the Shift-G popup
Move the selected vertices upward G Z




In Object Mode add a Subdivision Surface* modifier with subdivisions set to 3:




Bake the normals of the resulting mesh to an unwraped plane and use the image as normal map.